Definition of rut noun from the Oxford Advanced American Dictionary

     

    rut

     noun
    noun
    NAmE//rʌt//
     
     
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  1. 1[countable] a deep track that a wheel makes in soft ground It was difficult to walk in the muddy ruts left by the tractor.
  2. 2[countable] a boring way of life that does not change I gave up my job because I felt I was stuck in a rut. If you don't go out and meet new people, it's easy to get into a rut.
  3. 3[uncountable] the rut the time of year when male animals, especially deer, become sexually active stags fighting during the rut see also rutted, rutting
See the Oxford Advanced Learner's Dictionary entry: rut